.banner {
    font-size: 0;
}

.banner img {
    width: 100%;
}

.content {
    width: 1200px;
    margin: 0 auto;
    padding-bottom: 150px;
}

.content .title {
    font-size: 36px;
    color: #131313;
    text-align: center;
    margin-top: 50px;
}

.form {
    width: 1040px;
    margin: 70px auto 0;
    font-size: 0;
}

.form-item {
    margin-bottom: 45px;
    overflow: hidden;
    width: 480px;
    display: inline-block;
}

.form-label .mark {
    color: red;
}

.form-content {
    margin-left: 100px;
    background: #fff;
    height: 50px;
}

.form-item.check .form-content {
    background: none;
}

.form-content .txt {
    display: block;
    font-size: 16px;
    line-height: 50px;
    padding: 0 15px;
    color: #5e5e5e;
}

.form .submit {
    width: 350px;
    outline: none;
    border: none;
    font-size: 16px;
    background: #7e7e7e;
    height: 50px;
    line-height: 50px;
    text-align: center;
    color: #fff;
    cursor: pointer;
    display: block;
    margin: 0 auto;
    margin-top: 30px;
}